public async Task <ActionResult> Index(CurrenciesViewModel model)
{
List <string> currenciesList = await _currenciesListHelper.GetCurrenciesListAsync();
model.SelectedBase = currenciesList.FirstOrDefault
(x => x.Contains(ConfigurationManager.AppSettings["DefaultBase"]));
model.SelectedQuote = currenciesList.FirstOrDefault
(x => x.Contains(ConfigurationManager.AppSettings["DefaultQuote"]));
//Or defaults
if (model.SelectedBase == null)
{
model.SelectedBase = currenciesList[0];
}
if (model.SelectedQuote == null)
{
model.SelectedQuote = currenciesList[1];
}
DatesRangeUIModel datesRangeModel = await _datesRangeHelper.GetDatesRangeAsync();
model.StartDate = DateTime.Parse(datesRangeModel.StartDate.ToString("dd-MM-yyyy"));
model.EndDate = DateTime.Parse(datesRangeModel.EndDate.ToString("dd-MM-yyyy"));
model.Date = model.EndDate;
Session["CurrenciesList"] = currenciesList;
model.Rate = await _rateHelper.GetRateAsync(model.SelectedBase, model.SelectedQuote, model.Date);
return(View(model));
}
public async Task <DatesRangeUIModel> GetDatesRangeAsync()
{
if (_apiHelper.UseLocalApi)
{
return(await _apiHelper.GetDatesRangeAsync());
}
else
{
DatesRangeUIModel model = new DatesRangeUIModel
{
StartDate = DateTime.Parse(ConfigurationManager.AppSettings["RemoteApiStartDate"]),
EndDate = DateTime.Now,
};
return(model);
}
}
//To avoid calling async method on constructor
protected async override void OnViewLoaded(object view)
{
base.OnViewLoaded(view);
//Changes in controls automatically calls the API for updating values, setting this property to false avoids it
CanCallGetRateAsync = false;
//Gets the list of avilables currencies
try
{
CurrenciesList = await _currenciesListHelper.GetCurrenciesListAsync();
//Sets initial values for comboboxes
SetSelectedCurrencies();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error, could not retrive currencies list. Sorry, shutting down... ");
Application.Current.Shutdown();
}
//Gets the range of avilables dates in the database
try
{
DatesRangeUIModel model = await _datesRangeHelper.GetDatesRange();
StartDate = model.StartDate;
EndDate = model.EndDate;
//Initialize DatePiker in end date
Date = model.EndDate;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, $"Error, could not retrieve avilable dates range, " +
$"the application may not work correctly");
}
CanCallGetRateAsync = true;
//Finally the call to the API is made
await GetRateAsync();
}